Practically, it actually depends on your preparations. How strong are your concepts? How well you’re prepared for your examination?
If you’re prepared well, only revision is needed, then certainly yes you’re going to crack the examination within a span of 2–3 months. Else, you won’t be able to crack it with a very good rank.
Ultimately, it depends on your level of preparation. I’d suggest you to sit for mock tests. Just to keep a check on your preparations and where do you actually stand?
But I also would ike to suggest that if for some reason, you didn’t score well in your mock tests, don’t feel low. Try to keep yourself motivated and always say to yourself that ‘Yes, you can do it and you’ll do it’. But it doesn’t mean that just by saying so you are going to make it to AIIMS or something 😂..
Nonetheless, you’ll feel motivated all the time and won’t be upset internally.
To my way of thinking, the best answer to your question is that it all depends on your preparation. So prepare well!